Students are often confused about how microeconomics and macroeconomics differ. They have substantially different “look and feel” properties.
A recent lecture was on the basic difference between the Austrian School and the Keynesians.
A lecture on the IMF given in 2006 is still relevant.
ECONOTES (short notes on economic concepts):
Logic and fallacies (from Enyclopedia Britannica), and other fallacies (the undistributed middle and the fallacy of composition)